Blinking Err message on LCD and viewfinder with Nikon N80

I just purchased a used Nikon N80 on eBay and have run into a problem. When I loaded my first roll of film everything seemed to be working normally. But after I tried taking my first picture the viewfinder went black and "Err" started flashing on my LCD and in my viewfinder. After searching online for this problem I read you should take out the batteries, wait 30 minutes, and do a two-button reset. I did all of those things, but nothing happened when I tried doing the two-button reset. It just kept blinking "Err." Does anyone know what I should do? Is the camera supposed to be on or off when doing the two-button reset, or does it not matter? I tried doing it with the camera both on and off. Thanks to anyone who can help.

What lens are you using?
A don't think a G lens is compatible with the camera.
And a D lens will need to have the aperture ring turned down to minimum.

I'm using a AF Nikkor 24mm f/2.8D stopped down to f/22.

I do not know, but the N80 manual is at
http://www.nikonusa.com/pdf/manuals/archive/N80-N80QD.pdf

Page 21 and 101
It says when Err and E blink, the film is not installed properly.
Or when Err and DX blink, the film is not DX encoded, but DX is selected.

Page 103 says Err blinking, malfunction. Release shutter again. If it keeps occurring, camera needs service.

I'm getting a blinking "Err" message on the LCD and a blinking "Err" message in the viewfinder. Releasing the shutter seems to stop displaying the message briefly (and even advances the exposure number on the LCD and viewfinder); but then the viewfinder goes black and when I press another button the same "Err" message displays.